66066762301667 has 4 divisors (see below), whose sum is σ = 66069508128576. Its totient is φ = 66064016474760.

The previous prime is 66066762301637. The next prime is 66066762301717. The reversal of 66066762301667 is 76610326766066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66066762301667 - 2²⁶ = 66066695192803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66066762301637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1372877363 + ... + 1372925484.

It is an arithmetic number, because the mean of its divisors is an integer number (16517377032144).

Almost surely, 2^{66066762301667} is an apocalyptic number.

66066762301667 is a deficient number, since it is larger than the sum of its proper divisors (2745826909).

66066762301667 is a wasteful number, since it uses less digits than its factorization.

66066762301667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745826908.

The product of its (nonzero) digits is 82301184, while the sum is 62.

The spelling of 66066762301667 in words is "sixty-six trillion, sixty-six billion, seven hundred sixty-two million, three hundred one thousand, six hundred sixty-seven".